The patient underwent excision of the sbcarinal mediastinal cystic lesion via video-assisted thoracoscopic surgery (VATS).
Gross: Specimen consists of multiple fragments of cyst wall measuring in aggregate 3.0 x 2.0 cm and 0.4 cm in thickness. Sectioning shows grey-red soft hemorrhagic cut surface.
Microscopy: Sections show cyst wall lined by ciliated pseudo-stratified columnar to cuboidal cells and within the wall there are scattered mucinous glands, fibrosis, smooth muscles and scattered lymphoid follicles.
Diagnosis: Bronchogenic cyst.